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Wenchen Fan da7bbb9435 [SPARK-8104] [SQL] auto alias expressions in analyzer 
Currently we auto alias expression in parser. However, during parser phase we don't have enough information to do the right alias. For example, Generator that has more than 1 kind of element need MultiAlias, ExtractValue don't need Alias if it's in middle of a ExtractValue chain.

Author: Wenchen Fan <cloud0fan@outlook.com>

Closes #6647 from cloud-fan/alias and squashes the following commits:

552eba4 [Wenchen Fan] fix python
5b5786d [Wenchen Fan] fix agg
73a90cb [Wenchen Fan] fix case-preserve of ExtractValue
4cfd23c [Wenchen Fan] fix order by
d18f401 [Wenchen Fan] refine
9f07359 [Wenchen Fan] address comments
39c1aef [Wenchen Fan] small fix
33640ec [Wenchen Fan] auto alias expressions in analyzer
2015-06-22 12:13:00 -07:00
..
ml [SPARK-8468] [ML] Take the negative of some metrics in RegressionEvaluator to get correct cross validation 2015-06-20 13:01:59 -07:00
mllib [SPARK-8511] [PYSPARK] Modify a test to remove a saved model in regression.py 2015-06-22 11:53:11 -07:00
sql [SPARK-8104] [SQL] auto alias expressions in analyzer 2015-06-22 12:13:00 -07:00
streaming [SPARK-8444] [STREAMING] Adding Python streaming example for queueStream 2015-06-19 00:07:53 -07:00
__init__.py [SPARK-4172] [PySpark] Progress API in Python 2015-02-17 13:36:43 -08:00
accumulators.py [SPARK-7899] [PYSPARK] Fix Python 3 pyspark/sql/types module conflict 2015-05-29 14:13:44 -07:00
broadcast.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
cloudpickle.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
conf.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
context.py [SPARK-8373] [PYSPARK] Add emptyRDD to pyspark and fix the issue when calling sum on an empty RDD 2015-06-17 13:59:39 -07:00
daemon.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
files.py [SPARK-3309] [PySpark] Put all public API in __all__ 2014-09-03 11:49:45 -07:00
heapq3.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
java_gateway.py [SPARK-6949] [SQL] [PySpark] Support Date/Timestamp in Column expression 2015-04-21 00:08:18 -07:00
join.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
profiler.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
rdd.py [SPARK-8373] [PYSPARK] Add emptyRDD to pyspark and fix the issue when calling sum on an empty RDD 2015-06-17 13:59:39 -07:00
rddsampler.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
resultiterable.py [SPARK-3074] [PySpark] support groupByKey() with single huge key 2015-04-09 17:07:23 -07:00
serializers.py [SPARK-8339] [PYSPARK] integer division for python 3 2015-06-19 00:12:20 -07:00
shell.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
shuffle.py [SPARK-8202] [PYSPARK] fix infinite loop during external sort in PySpark 2015-06-18 13:45:58 -07:00
statcounter.py [SPARK-4897] [PySpark] Python 3 support 2015-04-16 16:20:57 -07:00
status.py [SPARK-4172] [PySpark] Progress API in Python 2015-02-17 13:36:43 -08:00
storagelevel.py [SPARK-3417] Use new-style classes in PySpark 2014-09-08 15:45:36 -07:00
tests.py [SPARK-8202] [PYSPARK] fix infinite loop during external sort in PySpark 2015-06-18 13:45:58 -07:00
traceback_utils.py [SPARK-1087] Move python traceback utilities into new traceback_utils.py file. 2014-09-15 19:28:17 -07:00
worker.py [SPARK-6216] [PYSPARK] check python version of worker with driver 2015-05-18 12:55:13 -07:00